Here is the full list of all 94 Shop Titans achievements.
Enchant a legendary item
Open many chests
Increase your merchant level
Upgrade a furniture to a high level
Spend a lot of uncommon resources
Spend a lot of rare resources
Help fellow guild members
Deal massive damage with a single attack
Earn lots of gold!
Clear many quests
Craft many items
Fully ascend several items
Master many blueprints
Spend a lot of common resources
Hire many workers
Expand your shop
Make a lot of gold from a single sale
Bring back lots of components from quests
Slay many bosses
Have a Hero reach a high level
Sell a ton of items
Enchant many items
Hire many champions
Enchant an item with both a spirit and an element
Spend a lot of energy
Research lots of blueprints
Earn tokens at the Fortune Zone
Unlock all item types
Reach Argon's final rank
Reach Sia's final rank
Reach Yami's final rank
Reach Lilu’s final rank
Reach Rudo’s final rank